| 氯铝酸盐离子液体催化β-甲基萘歧化反应 |
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| 引用本文： | 李艳伟,白雪峰.氯铝酸盐离子液体催化β-甲基萘歧化反应[J].精细石油化工,2006,23(2):18-21. |
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| 作者姓名： | 李艳伟 白雪峰 |
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| 作者单位： | 1. 沈阳航空工业学院,辽宁,沈阳,110034
2. 黑龙江省石油化学研究院,黑龙江,哈尔滨,150040 |
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| 摘 要： | 对三氯化铝-氯代丁基甲基咪唑(Bmim]Cl-AlCl_3)、三氯化铝-氯代丁基吡啶(BPC-AlCl_3)、三氯化铝-四甲基氯化铵(Me_4N]Cl-AlCl_3)离子液体催化β-甲基萘(β-MN)歧化制备2,6-二甲基萘(2,6-DMN)进行了研究。通过正交实验,考察了3种不同阳离子型离子液体中反应温度、AlCl_3在离子液体中所占的摩尔分数及催化剂质量分数等反应条件对β-MN歧化反应的转化率和2,6-DMN选择性的影响,对比了3种阳离子型离子液体的催化反应性能。结果表明：Bmim]Cl-AlCl_3酸性离子液体最适合催化β-MN歧化反应。在反应温度160℃、AlCl_3摩尔分数0．8、催化剂质量分数14%条件下,β-MN转化率可达42．9%,2,6-DMN的选择性达到40．6%。反应系统中微量水是使离子液体失活的主要原因。
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| 关 键 词： | β-甲基萘 歧化反应 离子液体 2，6-二甲基萘 |
| 收稿时间： | 2005-09-02 |
| 修稿时间： | 2006-02-02 |
DISPROPORTIONATION OF β-METHYLNAPHTHALENE CATALYZED BY ALUMINIUM CHLORIDE IONIC LIQUIDS |
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| Li Yanwei,Bai Xuefeng.DISPROPORTIONATION OF β-METHYLNAPHTHALENE CATALYZED BY ALUMINIUM CHLORIDE IONIC LIQUIDS[J].Speciality Petrochemicals,2006,23(2):18-21. |
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| Authors: | Li Yanwei Bai Xuefeng |
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| Abstract: | Disproportionation ofβ-methylnaphthalene (β-MN) to 2,6-dimethylnaphthalene (2,6-DMN) over ionic liquid catalysts,such as 1,3-dialkylimidazolium aluminum chloride (Bmim]AlCl_4),N-al- kylpyrodium aluminum chloride (BPC-AlCl_3)and alkylammonium aluminum chloride (Me_4N] AlCl_4),was studied.Effects of reaction conditions such as temperature,reaction time,acid intensity and ionic liquid amount on the conversation ofβ-MN and selectivity to 2,6-DMN with three cationic i- onic liquid catalysts were investigated.The results showed that ionic liquid Bmim] AlCl_4 was the most suitable catalyst for the disproportion ofβ-MN.Under the following conditions:160℃,14% (w) catalyst,mole ratio of AlCl_3 in Bmim]AlCl_4=0.8,the conversation ofβ-MN and the selectivity to 2,6-DMN reached 42.9% and 40.6%,respectively.Trace amount of water was found to be re- sponsible for the deactivation of the ionic liquid catalysts. |
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| Keywords: | β-methylnaphthalene disproportionation ionic liquid 2 6-dimethylnaphthalene |
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